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|
#!/bin/sh
help() {
cat << EOF
${0}: Wrapper script to set wallpapers
options:
-d [File] Select a wallpaper or a directory
-c Remove the current wallpaper
-h Print this message and exit
NOTE: default directory is ~/.config/wallpapers
EOF
}
err() {
for line in "${@}"; do
echo "${line}" >&2
done
exit 1
}
run() {
if ! ${1} > /dev/null 2>&1; then
err "${2}"
fi
[ -n "${3}" ] && echo "${3}"
exit 0
}
if ! command -v xwallpaper > /dev/null 2>&1; then
err "${0}: xwallpaper must be installed"
fi
if [ ${#} = 0 ]; then
input="${HOME}/.config/wallpapers"
elif [ ${#} != 1 ] && [ $# != 2 ]; then
err "${0}: Invalid usage" \
"Try '$0 -h' for help."
fi
while getopts "hcd:" option; do
case "${option}" in
c)
run "xwallpaper --clear" \
"${0}: Failed to clear wallpaper"
;;
d) input="${OPTARG}" ;;
h) help; exit 0 ;;
*) err "Try '${0} -h' for help" ;;
esac
done
shift $((OPTIND - 1))
[ ${#} != 0 ] && err "${0}: Invalid usage" "Try '${0} -h' for help."
if [ -n "${input}" ]; then
case $(file -b --mime-type "${input}") in
image/*) image="${input}" ;;
inode/directory) waldir="${input}" ;;
*) err "${0}: Couldn't read given file" ;;
esac
fi
if [ -n "${waldir}" ]; then
image=$(find "${waldir}" -iregex '.*.\(jpg\|jpeg\|png\|gif\)' 2>/dev/null \
| shuf -n 1 )
fi
[ -z "${image}" ] && err "${0}: No image file found"
run "xwallpaper --zoom ${image}" "${0}: Failed to set wallpaper" "${image}"
|
